Mender-Convert UEFI GPT Output Image

Thanks for looking in to this. Looks simple enough :slight_smile: .

I like the conditional approach based on input disk type,

MENDER_PARTITION_TYPE=$(disk_get_part_value ${disk_image} 1 SCHEME)
if [ "${MENDER_PARTITION_TYPE}" == "gpt" ]; then
...

Would you be able to create a pull-request for this?